Manometer.



R. F. SCHNEIDER.

MANONIETER.

APPLICATION FILED IuIIE 21.1912.

Patented Apr. 6, 1915.

2 SHEETQ-SHEBT 1.

u {MMAIWI WIWI.

RLP. SCHNEIDER.

IVIANOMETER.

APPLlcATloN FILED JUNE 27, |912.

Ll @Qa Patented Apr. 6, 1915.

2 SHEETS-SHEET 2.

SENEXDER,

Specification of Le'tteis Patent.

igieeese.,

ASSIGNR TO CHARLES iGL'LB'UE, i EW YRK.

.Signification filed inne 2?, 15H53. Serial No. @6,145

T0 aZZ whom it may @once/wm.'

Be it known time "i, Runen E, SCHNEIDER, @citizen of the United Steses., and e esiden; of the borough of lroeklyn, county of Kings, eigy and State el New York., lieve in- Yen'foefl certain new and useful iinpievements in liflenorneteis, of which the following` is :i specification.

My invenfion relates be inanometeis enel more poiienleily te ineieurial man ometers ami lies tier its objee: Bio piovde en insiuf inen; o illiis kind which, when net in use, may readily be iolclefl inse e. ieloiively small compass and easily nnfolfle. ei" e2;- izendeel to en opesive and in Wliieb the nieicni'y is seein against; ing iii sie inepemtive tion of e si-uinem'g.

My impim/'einenb n lieieineitef enel 'fiile eetin'es o be Doine. out in the anwenden eleizns.

eeienee is ie be heil 'to 'lle eocoinpenying cliewi gs in Whichis en elevfaion oiC ene isieed i? sosiien Condition 'oi" use y sealed condiinoi'e pm'tieiileily @e l "se i si i, the instmniena, is eenstiuctefl with preferably tizinspeen; mein 7zubes l0 and il pieieiabiy nii'snged parallel to each einer, the @tube ll forming receptacle which is Connected ai: ene einl by means 0i e biensveise sube i2 Wilsli lie tube ll izo 'eim a substnninslly 'll-shaped tube adapted 'bo con min ineion ,Y or otliei indicating7 medium and eeinycising what might iai-mein seeeien.

The opposite open enas of seid tube l@ sind eeepteele il extend inse oeps 'ifi and l5 enel are secured 'biieiein in any suiizable mennen, seid Caps being vided with bores l5 1i willen extend 'ians\.'eiseljf Sie the of folie Lubes i0 enel l. The bores 142.6 und 17 sie ixeefembly impe-Yell in opposite diiectiens and ae eii axial alinement as siiein bes; in Passages or elm els and foin saifl boi'es l@ en aoii'erl i* 3 n" 19 eienl l@he Lubes l0 and il snel comme.A with foi' "elle purpese to be i eliennels 1S and l?) deseiibe und .tions '2 rotasbly mounted in the bore and 17 of said caps ll enel l5, said plug being held against displacement in the direction of its axis by means of nn's screwed. upon suitable seieW-tliieadecl poi'ions of seid. plug end preferably seated in depressions 23 formed in the caps as clearly shown in Figs. 3 enel el. The seid plug 20 is fun lief piovided with aneZ/ile or coupling ineinbei 24% by ineens si which the instruivent may be oonneeif in any customary i `:inner with Tyhe soufce o nessni'e oi' einer :eiee to be measured. ik. 'L iii'il auxiliary mbe has its one end secure/(l in n, depression 'foinied in seid piug 2C in any suitable mei ner and eitliei 'has its opposite enel entiiely @pen oi' oo'feie-l es shown in Fig. 'i die iewinggs. Veni; being poviflecl in eins last ne?. "istanee and comprises what 75 :nigli be ienne@ session. @tissage ei' channel 22'" e nds axially of the plug Q0 end communicates ne one end i iee encl of which i in line Wi ebannel i3 and Se ber enel with eneiiie; @lian-- in 'euin eoinnnmieates 1 ne bei ness 1 I3 i 3l which extends :in en fee end orenlecl in l nel if), h@ awo elniiinels {.iieei, ceinnmnieetion WQ l Qi) seen by referring bo "be inoperative ei foi( ns'eiinnefii, be ziuiiliz: bi, Neen be i 'n tubes besa*A in lling. in this eenfli on of A if 95 the channels 2S md El 1 1Y iee in s @.iieeion ewa-y fioin "die ebennewhich :final lil* latei channels aise 1'alms efgwei'ed and sealed by the ouei surface poi-fai@ the plug 20. The inoexbb Gf ezien ebennel :28 an@ 3l is in turn eloseal by n-ne sinoee boies i6 and l?. being understand ibut the nie tepeied poizions @l iii sei iguizws 'le and l? mib what inigli. be "ienne innning i in etliei' Words, sui'iiei i..

init e iotaien e beies l@ the 'vaiions channels wie l eeniitien deseiinen site trated in Fig. 4. When it is desired to use the instrument the auxiliary tube 25 is swung to the position illustrated in Fig. 1 and the plug 20 consequently rotated relatively to the caps 14 and 15.` This operation brings the mouth of the channel 28 into registry With the channel 18 and the mouth of the channel 31 into registry With the channel 19 and thus connects the tube 11 vwith the nozzle 24 and the auxiliary tube l() with the main tube 25 which auxiliary tube thus substantially forms an extension of said main tube as clearly shown in Fig. 3. If'the nozzle 24 is noW connected With the source of pressure or other force to be measured the effects of this pressure or other force Will be transmitted through the channels 30, 31 and 19 and to the tube 11, and Will'be exerted on the upper surface of the mercury or other indicating medium 173 in the tube 11. This upper surface of said indicating medium Will be depressed by this force and Will accordingly cause the mercury or other indicating medium to rise in the tube 10, and if the force is great enough, the said indicating medium will be forced through the channels 18, 28, 27 and 29 and into the tube 25. In order that a reading may be had in a simple manner, this tube 25 is provided With a scale 32 suitably divided and indicating in a desired manner the pressure exerted.

In order to provide for an accurate reading of a pressure which is not great enough to force the mercury or other indicating medium completely through the channels 18, 28, 27 and 29, and to compensate for these channels in which the mercury would ordinarily not be visible, a portion of the scale is produced on the tube 11 as indicated at 33. In the illustration this portion 33 of the scale reads from zero to forty, While the portion 32 or in other Words a continuation of the scale on the tube 25 reads from forty upward. Thus if the pressure exerted on the mercury should be less than that indicated by the point 40 on the scale 33 the reading would be taken from'this portion 33 by noting at what point thereon the upper end of the mercury column or other indicating medium in the tube 11 was located. If the pressure should be sufficient to depress the mercury in the tube 1l suiciently to cause its upper end to register with the point 40 in the scale 33, then it Will be found that the upper end of the mercury column which is normally in the tube 10 is also in registi' with the point 40 on the scale 32 of the tube 25. ny increased pressure would nou7 be readable on the scale 32 s0 that it Will be seen that an accuratereading of all pres- "sures from zero upward vmay be readily had with my improved instrumenteven though a part thereof is made of opaque material. In this form of my instrument the tube 25 is thus swiveled .in the sleeves 14' and 15, the

tube also bores 16 and 17 of which form bearings for the preferably tapered portions 21 of the plug 20 to permit said tube 25 to be swung to an operative position in which as before tube to properly accommodate the maximum rise of the mercury necessary to measure the maximumv pressures for which the instrument is designed is done aWay With and the danger of breakage is practically obviated.

In addition to this a manometer made ae.

eording to my invention also occupies a minimum amount of space When not in use and is therefore easily carried and readily shipped. By constructing the tube 25 in the manner so far described and illustrated in Figs. 1, 2, 3 and 4, the portions 21 form trunnions extending in opposite directions so that by journaling these trunnions in bearings as illustrated the upper ends of the tubes 10 and 11 are securely braced and form a rigid structure Which is not easily fractured or injured.

In the form of my invention illustrated in Figs. 5, 6, 7 and 8 the instrument comprises main tubes 10a and l1a the latter of which forms a receptacle connected at 12a with the tube l0 to form a substantially U-shaped comprising What might be termed a main section and also adapted to contain mercury 13a or other indicating medium in the same manner as in the first form of my improvement. The open end of the main tube or receptacle 111L extends into a cap 15ZL and is secured therein in any suitable manner, said cap 15EL being provided With a preferably tapered transverse bore-17a and 'a channel 19a extending from said bore and communicating With the tube 11a. VThe said cap l5a is further provided with 'a nozzle or other' coupling member 24a, having a channel 30a extending from the said bore 17a to the free end of the nozzle and preferably in alinement with the channel 1911, the said nozzle affording a means through the may be with the be measrotatably and is maintained communication with each other or to dis-- axial direction by rasante connectV them according to the position of the plug as will be more fully set forth hereinafter. r1`he open end of the main tube 10a is secured in any suitable manner in a cap 14;l in the same manner as in Fig. 1, said cap 14a being also provided With a transverse preferably tapered bore 16a and a channel 18a extending therefrom and communicating with the tube 10a. An elbow or plug 20a has a tapered portion 21a rotatably mounted in said bore 16a and is also secured therein against any movement relatively to the cap 14a `other than a rotative one by means of a screw and nut 22a. A channel 27 similar to the channel 27 is formed in said elbow and communicates at one end with a channel 28B similar to the channel 28 and in line With the channel 18?. The opposite end of the channel 2721 is in communication with an auxiliary tube 25"*v similar to the tube 25 and also forming What might be termed an auxiliary section, said tube 25 having its one end secured in the cap 14a in any suitable manner and its other end either entirely open or substantially closed as illustrated and provided withv an air vent 26 in the same way as in Fig. 1. portion of a scale 32a anda continuing scale portion 33a may be produced respectively on the tubes 25EL and 11'L1 and correspond in function and operation to the scale portions 32 and 33 of the first form of my improvement.

In the form of my invention illustrated in Figs. 5 to 8 inclusive, and noW being` described, the auxiliary tube 25a in the normal or inoperative position of the parts extends adjacent to and preferably parallel With the tubes 10 and 11a as shown in Fig. 6. 1n this condition the channel 2Sa extends in a direction away from the channel 18a which is accordingly sealed by the surface of the tapered portion 21a and communication between the tubes 10a and 20a consequently cut off as shown best in Fig. 8. At the same time the plug 34 is preferably in a position with the passage e3-lsb out of registry with the channels 19a and 30 so that these channels are disconnected and the channel 19a and consequently the tube 11Et is securely sealed by the surface of said plug also as 'shown best in Fig. 8. lVhen it is desired to use the instrument, it may first be connected with the source of pressure to be measured after which the ,plug 34C maybe rotated in the cap 15a by means of the handle 34a until the passage SLi-b registers with the channels 19a and 30a which are thus brought into communicationwith each other and connect the tube 11a with the source of pressure or other force to be measured. lf the tube 25at is now moved to the position shown in Fig. 5 the instrunient Will-be ready for use, this movement of the said tube 25a having rotated the tapered portion 21n of the plug 2OfL in the cap 14a so as to bring the end of the channel 28l into registry With the channel 18a and the tubes 10a and 25a into communication With each other. It is, of course, to that the tube 25a may be first moved as described and the instrument then connected be understood with a source of pressure or other force and the plug 34 then manipulated to connect the channels 19a and 30 if this procedure 1s preferred. In either case the operation and function of the instrument is the same as the one shown in Figs. 1 to l inclusive. The last form of my invention thus has substantially the same advantages of the form of my improvement first described, as will be clearly apparent from the illustration and description. In both forms after the instrument has been used, the tubes 25 or 25a is returned to the position shown in Figs. 2 and G respectively in which position in Fig. 2 both the tubes 10 and 11 are securely and automatically sealed while in Fig. l the tube 10a is automatically sealed and the tube 11a closed by operating the plug '3v-lf to disconnect the channels 19a and 30u. It is also to'be understood that suitable stops may be provided if desired to limit the rotative movements of the tubes 25 and 25a and the plug 34 in such a manner as to bring the various channels into and out of communication with each other. In addition to this, it will readily be seen that in the form of my improvement shown in Figs. 5 to 8 inclusive the tube may be mounted on the tube 10a in the opposite Way from that shown so as to move in a plane extending between the tubes 10a and 11"l instead of being movable in a plane located outside of said tubes as in the illustration. In other Words if constructed in this manner the tube 25a in the folded or inoperative condition of the instrument would occupy a position similar to that of the tube 25 in Fig. 2 and in the unfolded or extended condition, said tube 25a would be positioned as is the tube 25 in Fig. 1. The plugs 20 and 2Oa With their passages or channels constitute valves which are opened or closed as the tubes -25 or 25 are actuated and either' establish or disestablish communication between the tubes 10 and 25 and 10 and 25 according to the positions of said tubes 25 and 25a. 1t will be further understood that as the indicating medium 13 or 13a is moved upward in the tubes 25 or 25 the air above the same in said tubes Will either be forced out of the open ends thereof or through the air vents 2G or 26.

Various changes in the specific forms shown and described may be made Within the scope of the'claims without departing from the spirit of my invention.

t 1 claim:

1. A manometer comprising a main tube, an auxiliary tube movably mounted on said main tube and movable to an operative position to form a continuation of said main ilo tube in a lengthwise direction, a coupling member communicating with said main tube and adapted to connect the manometer with the source of the force to be measured and provided with means for establishing and disestablishing communication between said main tube and said coupling member, means for establishing and Vdisestablishing communication between said main and auxiliary tubes and an indicating medium normally in said main tube and movable into said auxiliary tube when the latter is in its operative position.

2. A manometer comprising a main tube, an auxiliary tube movably mounted on said main tube and movable to an operative position to form a continuation of said main tube in a lengthwise direction, a coupling member adapted to connect the manometer with the source of the force to be measured, means movable with said auxiliary tube adapted to concurrently establish and disestablish communication between said main and auxiliary tubes and between said main tube and said coupling member as the auxiliary tube is moved to and from an operative position and an indicating medium normally in said main tube and movable into said auxiliary tube when the latter is in its operative position.

8. A manometer comprising main tubes communicating with each other, a rotatable member mounted thereon and provided with a nozzle, an auxiliary tube carried by said rotatable member and normally extending between said main tubes in an inoperative position and movable to an operative position to form a continuation Vof said main tubes in a lengthwise direction, said rotatable member being provided with channels whereby communication between said auxiliary tube and said main tubes and between said main tubes and said nozzle is concurrently established and disestablished as the auxiliary tube is moved, and an indicating medium normally in said main tubes and movable into said auxiliary tube when in its operative position.

4. A manometer comprising main tubes communicating with each other, caps secured on the free ends of said tubes each provided with a channel communicating with a main tube and alining transverse bores, a rotatable member j ournaled in said bores, an auxiliary tube carried by said rotatable member and normally extending between said main tubes in an inoperative position and movable to an operative position to form a continuation of said mam tubes in a lengthwise direction, said rotatable member being provided with disconnected passages one of which forms an inlet passage and the other of which communicates with said auxiliary tube, ing arranged to be brought into and out of both passages beregistry with said channels as the auxiliary tube is moved to and from an operative position whereby communication between the main tubes and the auxiliary tube and the inlet passage is concurrently established and disestablished and an indicating medium normally in said main tubes and movable into said auxiliary tube when in its operative position.

5. A manometer comprising two main tubes in communication with each other, an auxiliary tube pivoted on one of said tubes and normally extending parallel thereto in an inoperative position, said auxiliary tube being movable to an operative position to form a continuation of said main tube in a lengthwise direction, a valve connected with said auxiliary tube and adapted to establish and disestablish communication between said main and auxiliary tubes as the auxiliary tube is in an operative or an inoperative position, a nozzle for the other main tube, means arranged to connect or disconnect said nozzle from said main tube and an indicating medium normally in said main tubes and movable into said auxiliary tube when in its operative position.

6. A manometer comprising two main tubes in communication with each other, an auxiliary tube movably mounted on said main tubes and movable to a position to form a continuation thereof in a lengthwise direction, means for establishing communication between said main tubes and said auxiliary tube in its operative position, lan indicating medium arranged to be lowered in one of said main tubes and raised in the other and into said auxiliary tube, a portion of a scaleon the main tube in which the indicating medium is lowered and cooperating with said indicating medium as the same descends in said tube, and a continuation of said scale on said auxiliaryA tube arranged to coperate with said indicating medium as the same rises in the other tube. Y

.7. A manometer comprising a main section, means for connecting said manometer with a source of pressure, a tube section, arranged to form. a continuation of said main section in the direction in which the liquid rises when pressure is applied thereto from said source of pressure, and means comprising a valve whereby said tube section is hinged to said main section and com-` munication between said sections is controlled so that said communication shall be either open or closed, one of said sections having a translucent face whereby the variations in the movement of the liquid column may be measured.

8. The combination of a receptacle for a pressureereceiving end of a liquid column, a tube section having a bend connected with said receptacle, a second tube section, and

CTI

means comprising a valve whereby said second tube section is hinged to said irst named tube section and communication between said sections is controlled, so that said communication shall be either open or closed, graduations being provided whereby the height of a liquid column in said tube sections may be read.

9. Ina manometer, the combination of an `upright receptacle for the pressure-receiving end of a liquid column, a tube section having a bend connected with said receptacle, a second tube section, and means comprising :i

valve whereby said second tube section is hinged to said tube section first named, and 15 communication between said sections is controlled, graduations being provided whereby the height of a, liquid column in said manometer may be read.

In testimony whereof I have hereunto set 20' my hand in the presence of two subscribing witnesses.

' RALPH F. SCHNEIDER. Witnesses:

JOHN A. KEHLENBECK, M. I-I. LOCKWOOD. 

